package io;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo2 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("01.rmvb");
        FileOutputStream fos = new FileOutputStream("01_cp.rmvb");
        byte[] data = new byte[1024*10];
        int len = 0;//记录每次实际读取的字节数

        long start = System.currentTimeMillis();
        while( (len = fis.read(data)) != -1  ){
            fos.write(data,0,len);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕,耗时"+(end-start)+"ms");
        fis.close();
        fos.close();

    }
}
